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题目
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The computer was invented in the 1940’s and ______ quite a lot ever since.
A.was changedB.had changed
C.has been changedD.will change

答案
C
解析

试题分析:考察时态。本题的关键在于后面的时间状语ever since自从,该短语要和现在完成时连用。句意:电脑是20世纪40年代发明的,从那以后一句发生了很大的改变。故C正确。
点评:时态题的考查关键是抓住句子的上下文含义和句中的时间状语。要根据时间状语来选择合适的时态,在平时的学习中要注意积累有关时态的用法和各种时态的特殊之处。如since, so far等经常与现在完成时连用。在条件状语从句中用一般现在时代替将来时等等。
核心考点
试题【The computer was invented in the 1940’s and ______ quite a lot ever since.A.was 】;主要考察你对一般现在时等知识点的理解。[详细]
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